Automatic lubricating device for electric motors



(No Model.)

S. L. BARRIETT. AUTOMATIC LUBRIOATING DEVICE FOR ELECTRIC MOTORS.

No. 482,927. Patented July 22, 1890.

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SAMUEL LAVVRENOE BARRIETT, OF BROOKLYN, NEWV YORK.

AUTOMATIC LUBRlCATlNG DEVlCE FOR ELECTRlC MOTORS.

SPECIFICATION forming part of Letters lPatent No. 432,927, dated July22, 1890.

Application filed March 13, 1890.

To all whom it may concern:

Be it known that I, SAMUEL LAWRENCE BARRIETT, a citizen of the UnitedStates, residing at Brooklyn, in the county of Kings and State of NewYork, have invented a new and usefulAutomatic Lubricating DeviceforElectric Motors, of which the following is a specification.

This invention relates to automatic lubricating devices for electricmotors; and it has for its obj ect'to provide a device of this classwhich shall be simple in construction and thoroughly eliicient, as wellas entirely automatic in operation.

WVith these ends in View the invention consists in the improvedconstruction, arrangement, and combination of parts, which will behereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 1s a perspective view of anelectric motor to which my invention has been applied. Fig. 2 is avertical sectional view taken longitudinally through the shaft orspindle carrying the armature. Fig. 3 is a vertical transverse sectionalView taken on the line as a in Fig. 2.

Like numerals of reference indicate like parts in all the figures.

The motor to which my invention in the drawings hereto annexed has beenshown applied is of the ordinary shuntwonnd-drnmarmature species.

1 designates the base, to which the corepieces 2 2 of the field-magnetare secured by means of stud-bolts 3 3, passing through the pole-piece4, through the said core-pieces, and through the base, under which theyare provided with nuts 5, by means of which the parts may be drawnsecurely into position. The base being thus a prolongation of thepole-piece, is magnetized and magnetizes the spindle 6 of the armature7. Said spindle or shaft is journaled in the boxes 8. The boxes 8, whichare hollow, as shown, form receptacles for oil, and in the said boxesare secured the vertically-slotted brass bushings or uprights 9, formingbearings for a spindle 10, carrying the soft-iron disks 11. Normallywhen the machine is at rest the position of the spindle 10 is at thelower ends of the slots 12 in the bushings 9, and the iron disks 11Sen'al No. 343,768. (No model.)

are then out of contact with the shaft of the armature. WVhcn themachine is in motion, the shaft of the armature becomes magnetized andattracts the soft-iron disks, which are rotated by friction therewith.At the same time the said disks dip in the oil contained in the boxes,and thus supply a sufficiency of lubricating material to the shaft ofthe armature.

A screw-plug 18 is provided, through which the box may be filled withoil, and the spent oil may be drawn off, when desired, through asuitably-located cock 14. It will be seen that by this device the shaftof the armature will be supplied with lubricating material automatically, and only when the machine is in operation, thereby avoidingwaste of lubrieating material and the difficulty and annoyance incidentto the necessity for frequently oiling the machine.

The construction of the device is simple and inexpensive, and it may beeasily applied to electric motors of various kinds and patterns.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- 1. In an electric motor soconstructed that the shaft of the armature shall be magnetized when inmotion, a lubricating device comprising an oil-receptacle arranged beloweach spindle of said shaft, and soft-iron disks arranged in saidoil-receptacles and adapted to be attracted by and rotated by frictionwith the shaft of the armature when in motion, substantially as setforth.

2. The combination, with a shaft adapted to be magnetized when inmotion, of a lubricating device comprising softiron disks mounted upon avertically-movable spindle and dipping in an oil-receptacle below eachspindle of said shaft, substantially as set forth.

3. The combination of a shaft adapted to be magnetized While in motion,oil-receptacles formed in the bearings of said shaft, vertically-slotteduprights secured in the said oil-receptacles, spindles mountedvertically adjustable in the said slotted uprights, and soft-iron disksmounted upon thesaid spindles, substantially as set forth.

4. In an electric motor, the combination of the base, the field-cores,the pole-piece, the bolts extending through and connecting thepole-piece, the field-cores, and the base, which latter is therebyconstituted a prolongation of the. pole-piece, the oil-receptaclesformed in the base, the armature-shaft journaled -in the latter, thevertically-slotted uprights secured in the oil-receptacles, the spindlesjournaled in the slots of said uprights, and the". 10 soft-iron disksupon the said spindles, all arranged and operating substantially as setforth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signatu re in presence of two witnesses.

SAMUEL LAWRENCE BARRIETT.

\Vitnesses: 1

MAX BAYERSDORFER, ABR.- A. GREENHooT.

